WP EasyPay – Square for WordPress <= 3.2.0 - Cross-Site Request Forgery Bypass

Vulnerability Description

The WP EasyPay – Square for WordPress plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 3.2.0. This is due to missing or incorrect nonce validation on the wpep_download_transaction_in_excel() function. This makes it possible for unauthenticated attackers to trigger a transactions download via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

References

• https://www.wordfence.com/threat-intel/vulnerabilities/id/a1fbb3a6-fcc2-47c5-a086-331e69292add?source=cve
• https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/
• https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/
• https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/
• https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/
• https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/
• https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/
• https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2551919%40wp-easy-pay&new=2551919%40wp-easy-pay&sfp_email=&sfph_mail=
• https://plugins.trac.wordpress.org/browser/wp-easy-pay/trunk/wpep_setup.php?rev=2426641#L219